Matematika Ria
Tambahkan ke favorit Tambahkan ke favorit
link Tautkan di sini
Beranda Matematika RiaBeranda

Hak cipta © 2009

Using a Protractor

Protractors are fun and easy to use

Have a look at this animation (press the play button) to see how to make a neat angle using a protractor and ruler:


Protractors usually have two sets of numbers going in opposite directions.

Be careful which one you use!

When in doubt think "should this angle be bigger or smaller than 90° ?"

Have a Go Yourself!

Try to measure the angles A, B, C and D inside this shape.

Be careful which angle you read from the protractor.

Hint: if you get them all correct, they will add up to 360°


The answers are ... no, that would spoil the fun!